The structure of the iron spiral staircase mainly consists of components such as central columns, step boards, platform boards, and railings. According to the different load-bearing methods, iron spiral stairs can be divided into various types such as central column, curved plate, curved beam, and suspended type. Among them, the central column iron spiral staircase is the most common type, which supports the weight of the entire staircase through the central column, and the step board spirals up around the central column.

The spiral staircase, with its smooth lines and continuous rotating movements, creates a dynamic aesthetic visually. Whether viewed from bottom to top or from top to bottom, one can feel a unique visual shock. It is not only a means of transportation, but also a piece of art in the space, which can instantly enhance the style and temperament of the entire space.